12220210221157 has 2 divisors, whose sum is σ = 12220210221158. Its totient is φ = 12220210221156.

The previous prime is 12220210221053. The next prime is 12220210221173. The reversal of 12220210221157 is 75112201202221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12165927744961 + 54282476196 = 3487969^2 + 232986^2 .

It is an emirp because it is prime and its reverse (75112201202221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12220210221157 - 2⁷ = 12220210221029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220210221257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110105110578 + 6110105110579.

It is an arithmetic number, because the mean of its divisors is an integer number (6110105110579).

Almost surely, 2^{12220210221157} is an apocalyptic number.

It is an amenable number.

12220210221157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220210221157 is an equidigital number, since it uses as much as digits as its factorization.

12220210221157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 12220210221157 its reverse (75112201202221), we get a palindrome (87332411423378).

The spelling of 12220210221157 in words is "twelve trillion, two hundred twenty billion, two hundred ten million, two hundred twenty-one thousand, one hundred fifty-seven".